Gen.Heur.MSIL.Krypt.2_121e3a9ecf – Adaware

Dynamic Analysis

Payload

Behaviour	Description
WormAutorun	A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:1552

The Trojan injects its code into the following process(es):

WindowsUpdateApplication.exe:912

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

The process WindowsUpdateApplication.exe:912 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\WinUpdate.exe (33 bytes)
%Documents and Settings%\%current user%\Application Data\windowsdefender.exe (161 bytes)

The process %original file name%.exe:1552 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\WindowsUpdateApplication.exe (22676 bytes)

Registry activity

The process WindowsUpdateApplication.exe:912 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BE 18 47 8B 9D 46 07 03 F9 9F 84 C4 D0 8D 3E 05"

[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"7KLFS1LL29" = "Stars"

[HKCU\Software\Microsoft\Active Setup\Installed Components\{3BCCEB4B-8ABB-7FAF-0FB1-DC7D2D6BB6BF}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\windowsdefender.exe"

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{3BCCEB4B-8ABB-7FAF-0FB1-DC7D2D6BB6BF}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\windowsdefender.exe"

[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"7KLFS1LL29" = "May 16, 2015"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run]
"Windows" = "%Documents and Settings%\%current user%\Application Data\windowsdefender.exe"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Windows" = "%Documents and Settings%\%current user%\Application Data\windowsdefender.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Windows" = "%Documents and Settings%\%current user%\Application Data\windowsdefender.exe"

The process %original file name%.exe:1552 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "92 49 FD DE D1 46 30 46 18 97 DA 8F FF EB ED FC"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

Dropped PE files

MD5	File path
cbf9ff42a804974a78b3091cb75cdd0f	c:\Documents and Settings\"%CurrentUserName%"\Application Data\windowsdefender.exe
cbf9ff42a804974a78b3091cb75cdd0f	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\WindowsUpdateApplication.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.

Removals

Remove it with Ad-Aware

Click (here) to download and install Ad-Aware Free Antivirus.
Update the definition files.
Run a full scan of your computer.

Manual removal*

Terminate malicious process(es) (How to End a Process With the Task Manager):
%original file name%.exe:1552
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Application Data\WinUpdate.exe (33 bytes)
%Documents and Settings%\%current user%\Application Data\windowsdefender.exe (161 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\WindowsUpdateApplication.exe (22676 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Windows" = "%Documents and Settings%\%current user%\Application Data\windowsdefender.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Windows" = "%Documents and Settings%\%current user%\Application Data\windowsdefender.exe"
Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
Reboot the computer.

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

Company Name:
Product Name: Stub
Product Version: 1.0.0.0
Legal Copyright: Copyright (c) 2012
Legal Trademarks:
Original Filename: Stub.exe
Internal Name: Stub.exe
File Version: 1.0.0.0
File Description: Stub
Comments:
Language: Language Neutral

Company Name: Product Name: StubProduct Version: 1.0.0.0Legal Copyright: Copyright (c) 2012Legal Trademarks: Original Filename: Stub.exeInternal Name: Stub.exeFile Version: 1.0.0.0File Description: StubComments: Language: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	8192	315700	315904	3.53998	9c130d44ab8e466d5db58e518d684301
.rsrc	327680	60928	60928	2.28265	9a262421e305dac63b2a5b852077d739
.reloc	393216	12	512	0.070639	67539ff04f369b809ff12eded86918cc
tIVnZFU	401408	125480	125952	5.44422	af9cfc5228970e1122c97acb66a82e32

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 7
1084822d8e0014a55c3b942febede7d8
e2a5172faa44f3507a2fa6468f34e481
7ff2d89b64ee91a594a8bcd3a9d86dcb
6f3557468290450293015a27178dee2f
293e5225e2ed68a8dca51adbe257292a
10a52de91a2616621b44c00c5178accf
0139af08ea51229bad2c75447f3af839

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

The Trojan connects to the servers at the folowing location(s):

Strings from Dumps

WindowsUpdateApplication.exe_912:

`.rsrc

WebHide

bss_server.usrReverseRelay

tmrWebHide

bss_server.Socket

bss_server.usrRelay

mswinsck.ocx

MSWinsockLib.Winsock

ieframe.dll

SHDocVwCtl.WebBrowser

WebBrowser

modLaunchWeb

%Program Files% (x86)\Microsoft Visual Studio\VB98\VB6.OLB

C:\Windows\SysWOW64\ieframe.dll

winmm.dll

user32.dll

advapi32.dll

shell32.dll

kernel32.dll

avicap32.dll

advpack.dll

GetAsyncKeyState

SetWindowsHookExA

UnhookWindowsHookEx

GetKeyboardLayout

GetKeyboardState

GetKeyState

SHFileOperationA

CreatePipe

PSAPI.DLL

GetTcpTable

ExitWindowsEx

EnumWindows

WinInet.dll

DeleteUrlCacheEntryA

urlmon

URLDownloadToFileA

ShellExecuteA

keybd_event

AddMsg

CHAT_ADDMSG

VBA6.DLL

C:\Windows\SysWow64\MSVBVM60.DLL\3

ws2_32.dll

olepro32.dll

GdiplusShutdown

RemotePort

LocalPort

WSOCK32.DLL

RegCloseKey

RegOpenKeyExA

ntdll.dll

03C:\Windows\SysWOW64\ieframe.oca

4^tmrTCP

%Program Files% (x86)\Microsoft Visual Studio\VB98\mswinsck.oca

tmrUDP

UDPSocket

UDPFlood

ole32.dll

crypt32.dll

oleaut32.dll

RegOpenKeyA

FindNextUrlCacheEntryA

FindFirstUrlCacheEntryA

txtPassword

imgLoginPressed

imgLogin

RegCreateKeyA

RegDeleteKeyA

RegEnumKeyExA

gdi32.dll

InternetOpenUrlA

FtpGetFileA

FtpPutFileA

FtpSetCurrentDirectoryA

FtpGetCurrentDirectoryA

FtpOpenFileA

FtpGetDirectory

Http_DownloadFile

FtpGetFileSize

FtpDeleteFileA

FtpCreateDirectoryA

FtpRemoveDirectoryA

FtpRenameFileA

FtpDownload

FtpUpload

cmdShowfiles

msvbvm60.dll

tmrTCP

?8??8??8??8??8?

2>e%Xdq

uMsg

strMsg

MsgNum

AllMsgs

lngPort

URL_TARGET

Port

Password

WebURL

Returns/Sets the port to be connected to on the remote computer

Returns/Sets the port used on the local computer

Binds socket to specific port and adapter

Occurs after a send operation has completed

.text

`.data

.rsrc

.rsmC

KERNEL32.DLL

MSVBVM60.DLL

*\AH:\Blackshades Project\Blackshades NET\server\server.vbp

2c49f800-c2dd-11cf-9ad6-0080c7e7b78d

http\shell\open\command

127.0.0.1

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1) Gecko/20090612 Firefox/3.5

{00020404-0000-0000-C000-000000000046}

\nir_cmd.bss speak text

\nir_cmd.bss setsysvolume 65535

\nir_cmd.bss mutesysvolume 1

\nir_cmd.bss mutesysvolume 0

\nir_cmd.bss screensaver

\nir_cmd.bss monitor off

\nir_cmd.bss monitor on

PORT

TRANSFERPORT

\rsout.tmp

SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\

Keylog

Wscript.Shell

HKEY_CLASSES_ROOT\HTTP\shell\open\command\

\winlogon.exe

iexplore.exe

ADVAPI32.dll

hXXp://VVV.facebook.com/?ref=home

hXXp://VVV.facebook.com

Windows Firewall/Internet Connection Sharing (ICS)

WebCamCapture

\Vuze\Azureus.exe

\LimeWire\LimeWire.exe

\uTorrent\uTorrent.exe

\uTorrent\uTorrent.exe /HIDE

\BitTorrent\bittorrent.exe

\MSWINSCK.OCX

\cmd.exe

\data.dat

\steam\steam.exe

nkey

dkey

regsvr32.exe

\pws_mail.bss

\pws_mess.bss

\pws_cdk.bss

\pws_ff.bss

\pws_chro.bss

\nir_cmd.bss

cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f

cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "

:*:Enabled:Windows Messanger" /f

winmgmts:{impersonationLevel=Impersonate}!\\.\root\cimv2

00000000

winmgmts:\\.\root\cimv2

Select * from Win32_Keyboard

api.ipinfodb.com

GET /v2/ip_query.php?key=

&timezone=off HTTP/1.1

Host: api.ipinfodb.com

GET /v2/ip_query_country.php?key=

Portable

winmgmts:\\.\root\SecurityCenter

\wallpaper.bmp

\wallpaper.jpg

WScript.Shell

WinServer 2003, Web Edition

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductName

__oxFrame.class__

Scripting.FileSystemObject

Autorun.ini

{557CF401-1A04-11D3-9A73-0000F81EF32E}

{1D5BE4B5-FA4A-452D-9CDD-5DB35105E7EB}

Address family not supported by protocol family.

Operation already in progress.

Operation now in progress.

Socket operation on nonsocket.

Operation not supported.

Protocol family not supported.

Protocol not supported.

Socket type not supported.

Winsock.dll version out of range.

CSocketMaster.SocketExists

CSocketMaster.PostSocket

CSocketMaster.ConnectToIP

CSocketMaster.ResolveIfHostname

CSocketMaster.SendBufferedDataUDP

CSocketMaster.SendBufferedData

/stext mess.dat

abe2869f-9b47-4cd9-a358-c22904dba7f7

\mess.dat

/stext mail.dat

\mail.dat

/stext ffpw.dat

\ffpw.dat

Web Site

Password

/stext chro.dat

\chro.dat

Action URL

SOFTWARE\MICROSOFT\Windows NT\CurrentVersion

Windows

SOFTWARE\Classes\Applications\iexplore.exe\shell\open\command

\dump.txt

\uTorrent\uTorrent.exe /DIRECTORY

255.255.255.255

finalizarprocessoportas

CONNECT %s:%i HTTP/1.0

SOFTWARE\Classes\http\shell\open\command

Software\Classes\http\shell\open\command

Software\Microsoft\Windows NT\CurrentVersion\SystemRestore

code.is.a.winner

Software\Microsoft\Windows\CurrentVersion\Uninstall\eMule

SOFTWARE\MICROSOFT\Windows NT\CurrentVersion\DigitalProductId

bps1.exe

bhookpl.dll

bnfa.exe

drvloadn.dll

drvloadx.dll

VNCHooks.dll

xr4tdwa.exe

shutdown.exe

TCnRawKeyBoard

HuntHTTPDownload

autorun.inf

hXXps://onlineeast#.bankofamerica.com

winlogon.exe

moz_logins

WEBCAMLIVE

explorer.exe

SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run

SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

\system32\userinit.exe,

notepad.exe

\system32\userinit.exe

steam.exe

hl.exe

\rspad.dat

@*\AH:\Blackshades Project\Blackshades NET\server\server.vbp

WindowsUpdateApplication.exe_912_rwx_00401000_00078000:

bss_server.usrReverseRelay

tmrWebHide

bss_server.Socket

bss_server.usrRelay

mswinsck.ocx

MSWinsockLib.Winsock

ieframe.dll

SHDocVwCtl.WebBrowser

WebBrowser

modLaunchWeb

%Program Files% (x86)\Microsoft Visual Studio\VB98\VB6.OLB

C:\Windows\SysWOW64\ieframe.dll

winmm.dll

user32.dll

advapi32.dll

shell32.dll

kernel32.dll

avicap32.dll

advpack.dll

GetAsyncKeyState

SetWindowsHookExA

UnhookWindowsHookEx

GetKeyboardLayout

GetKeyboardState

GetKeyState

SHFileOperationA

CreatePipe

PSAPI.DLL

GetTcpTable

ExitWindowsEx

EnumWindows

WinInet.dll

DeleteUrlCacheEntryA

urlmon

URLDownloadToFileA

ShellExecuteA

keybd_event

AddMsg

CHAT_ADDMSG

VBA6.DLL

C:\Windows\SysWow64\MSVBVM60.DLL\3

ws2_32.dll

olepro32.dll

GdiplusShutdown

RemotePort

LocalPort

WSOCK32.DLL

RegCloseKey

RegOpenKeyExA

ntdll.dll

03C:\Windows\SysWOW64\ieframe.oca

4^tmrTCP

%Program Files% (x86)\Microsoft Visual Studio\VB98\mswinsck.oca

tmrUDP

UDPSocket

UDPFlood

ole32.dll

crypt32.dll

oleaut32.dll

RegOpenKeyA

FindNextUrlCacheEntryA

FindFirstUrlCacheEntryA

txtPassword

imgLoginPressed

imgLogin

RegCreateKeyA

RegDeleteKeyA

RegEnumKeyExA

gdi32.dll

InternetOpenUrlA

FtpGetFileA

FtpPutFileA

FtpSetCurrentDirectoryA

FtpGetCurrentDirectoryA

FtpOpenFileA

FtpGetDirectory

Http_DownloadFile

FtpGetFileSize

FtpDeleteFileA

FtpCreateDirectoryA

FtpRemoveDirectoryA

FtpRenameFileA

FtpDownload

FtpUpload

cmdShowfiles

msvbvm60.dll

tmrTCP

?8??8??8??8??8?

2>e%Xdq

uMsg

strMsg

MsgNum

AllMsgs

lngPort

URL_TARGET

Port

Password

WebURL

Returns/Sets the port to be connected to on the remote computer

Returns/Sets the port used on the local computer

Binds socket to specific port and adapter

Occurs after a send operation has completed

.text

`.data

.rsrc

*\AH:\Blackshades Project\Blackshades NET\server\server.vbp

2c49f800-c2dd-11cf-9ad6-0080c7e7b78d

http\shell\open\command

127.0.0.1

Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1) Gecko/20090612 Firefox/3.5

{00020404-0000-0000-C000-000000000046}

\nir_cmd.bss speak text

\nir_cmd.bss setsysvolume 65535

\nir_cmd.bss mutesysvolume 1

\nir_cmd.bss mutesysvolume 0

\nir_cmd.bss screensaver

\nir_cmd.bss monitor off

\nir_cmd.bss monitor on

PORT

TRANSFERPORT

\rsout.tmp

SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\

Keylog

Wscript.Shell

HKEY_CLASSES_ROOT\HTTP\shell\open\command\

\winlogon.exe

iexplore.exe

ADVAPI32.dll

hXXp://VVV.facebook.com/?ref=home

hXXp://VVV.facebook.com

Windows Firewall/Internet Connection Sharing (ICS)

WebCamCapture

\Vuze\Azureus.exe

\LimeWire\LimeWire.exe

\uTorrent\uTorrent.exe

\uTorrent\uTorrent.exe /HIDE

\BitTorrent\bittorrent.exe

\MSWINSCK.OCX

\cmd.exe

\data.dat

\steam\steam.exe

nkey

dkey

regsvr32.exe

\pws_mail.bss

\pws_mess.bss

\pws_cdk.bss

\pws_ff.bss

\pws_chro.bss

\nir_cmd.bss

cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f

cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "

:*:Enabled:Windows Messanger" /f

winmgmts:{impersonationLevel=Impersonate}!\\.\root\cimv2

00000000

winmgmts:\\.\root\cimv2

Select * from Win32_Keyboard

api.ipinfodb.com

GET /v2/ip_query.php?key=

&timezone=off HTTP/1.1

Host: api.ipinfodb.com

GET /v2/ip_query_country.php?key=

Portable

winmgmts:\\.\root\SecurityCenter

\wallpaper.bmp

\wallpaper.jpg

WScript.Shell

WinServer 2003, Web Edition

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductName

__oxFrame.class__

Scripting.FileSystemObject

Autorun.ini

{557CF401-1A04-11D3-9A73-0000F81EF32E}

{1D5BE4B5-FA4A-452D-9CDD-5DB35105E7EB}

Address family not supported by protocol family.

Operation already in progress.

Operation now in progress.

Socket operation on nonsocket.

Operation not supported.

Protocol family not supported.

Protocol not supported.

Socket type not supported.

Winsock.dll version out of range.

CSocketMaster.SocketExists

CSocketMaster.PostSocket

CSocketMaster.ConnectToIP

CSocketMaster.ResolveIfHostname

CSocketMaster.SendBufferedDataUDP

CSocketMaster.SendBufferedData

/stext mess.dat

abe2869f-9b47-4cd9-a358-c22904dba7f7

\mess.dat

/stext mail.dat

\mail.dat

/stext ffpw.dat

\ffpw.dat

Web Site

Password

/stext chro.dat

\chro.dat

Action URL

SOFTWARE\MICROSOFT\Windows NT\CurrentVersion

Windows

SOFTWARE\Classes\Applications\iexplore.exe\shell\open\command

\dump.txt

\uTorrent\uTorrent.exe /DIRECTORY

255.255.255.255

finalizarprocessoportas

CONNECT %s:%i HTTP/1.0

SOFTWARE\Classes\http\shell\open\command

Software\Classes\http\shell\open\command

Software\Microsoft\Windows NT\CurrentVersion\SystemRestore

code.is.a.winner

Software\Microsoft\Windows\CurrentVersion\Uninstall\eMule

SOFTWARE\MICROSOFT\Windows NT\CurrentVersion\DigitalProductId

bps1.exe

bhookpl.dll

bnfa.exe

drvloadn.dll

drvloadx.dll

VNCHooks.dll

xr4tdwa.exe

shutdown.exe

TCnRawKeyBoard

HuntHTTPDownload

autorun.inf

hXXps://onlineeast#.bankofamerica.com

winlogon.exe

moz_logins

WEBCAMLIVE

explorer.exe

SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run

SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

\system32\userinit.exe,

notepad.exe

\system32\userinit.exe

steam.exe

hl.exe

\rspad.dat

@*\AH:\Blackshades Project\Blackshades NET\server\server.vbp

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps